Affinity
2.0
Additional Information Page 24
1.7.1 High Frequency Audiometry
4
High frequency audiometry (above 8 kHz) is performed using the same procedure as normal air conduction
audiometry. Note, however, that you are only allowed to test within the range of the headset calibration That
is, if the headset is only calibrated for a range of 125 Hz – 8 kHz you will not be allowed to present tones at
higher frequencies.
High frequency audiometry is helpful when testing hearing impairments caused by ototoxicity, noise
exposure and acoustic traumas as these mainly affect the high frequencies. This frequency area is more
susceptible to the effects of external factors such as medications and loud noises than the low and middle
frequencies.
Required Items:
• The Affinity
2.0
hardware
• Licensed AC440 Audiometry module within your Affinity
2.0
hardware with High Frequency functionality
• A calibrated high frequency audiometric headset (Koss R/80 or HDA200)
• A response button
Test Procedure:
1) Open the AC440 module through your patient management system, Noah or OtoAccess™.
2) If needed select a test protocol in the Protocols and sessions
3) To perform a high frequency audiometry, press the HF button
or HFz button in the front
screen.
4) Conduct high frequency audiometry using the normal air conduction audiometry method (see section
1.6 above for details), ensuring that you are using proper headsets. The following headsets are
available:
Koss R/80 can be calibrated for 8 kHz to 20 kHz
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HDA 200 can be calibrated for 125 Hz to 20 kHz
4
Koss R/80 is only available for the Affinity
2.0
/Equinox
2.0
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